There is no standard duration. A review can close in days when the buyer's questions are answered in one pass with evidence attached, and drag on for months when answers bounce back for clarification. What controls the clock is mostly the number of round trips, not the size of the questionnaire.
The stages, and where time goes
Most enterprise reviews follow the same shape, even when the buyer calls the steps something else.
| Stage | What happens | What usually stretches it |
|---|---|---|
| Intake | Buyer's procurement or security team opens a ticket and tiers the vendor | Waiting for a business owner to submit the request |
| Questionnaire | You answer a standard or custom form | Answers that need an engineer and a manager to confirm |
| Evidence | Reviewer asks for reports, policies, screenshots, exports | Evidence that is stale or lives in someone's inbox |
| Technical follow up | Calls, architecture walkthrough, sometimes a test | Scheduling, and unclear data flow diagrams |
| Risk decision | Approve, approve with conditions, or decline | The reviewer's queue and who must sign |
| Contract security terms | Security addendum or exhibit is negotiated | Legal and security working in sequence, not together |
Notice that only some of these stages are in your control. The queue at the buyer is theirs. Your job is to remove every avoidable round trip.
Why the number of round trips matters most
Each follow up question costs a few days at least: the reviewer reads, writes the question, you route it internally, someone answers, the reviewer reads again. A vague answer such as "we follow industry best practices" almost guarantees another loop. A specific answer, such as "SSO is enforced for all employees and access is reviewed quarterly, export attached", often ends the thread.
Three habits cut loops the most:
- Answer in the shape the question asks. If it asks yes or no, begin with yes or no, then one sentence of detail.
- Attach the evidence in the same message, not on request.
- Name one owner on your side who can answer technical questions the same day.
If you keep a reusable answer set, see build a security questionnaire answer library for how to keep it current.
What you can do before the clock starts
Prepare the packet once. A short list of items covers most requests: a current architecture or data flow diagram, your policy set with review dates, a summary of your latest independent test, your subprocessor list, and your incident response contact path. The post on questionnaire evidence pack folder structure shows one way to lay these out.
Ask the buyer early about their process. A useful question is "What are the stages on your side, and who signs off?" Many sellers never ask, and then discover a privacy review or a legal review that nobody mentioned. Knowing the stages lets you ask for the parallel path, for example starting the security addendum review while the questionnaire is still open.
What not to promise
Do not promise a date you do not control. You can commit to your own turnaround, for example "we answer follow ups within two business days", because that part is yours. Quoting a total review length to your sales team is a trap: they will pass it on to the customer as a close date.
Tracking your own review time
Record three dates for every review: when you received the request, when you sent the first complete response, and when the decision arrived. After a handful of reviews, you can see whether your delay is in first response (an internal problem) or in the buyer's decision (their queue). That data tells you where to invest. If your first response takes weeks, the fix is a prepared packet. If decisions take weeks after you responded in full, the fix is earlier engagement with the buyer's security contact.
Try it yourself
Safeguard can produce dependency and vulnerability evidence that often appears in reviewer follow up questions. Click through the dependency inventory demo and look at how components and versions are listed, since "list your third party components" is a common request.
Click through it at your own pace, or open it full screen.
Safeguard offers dependency scanning and SBOM generation, and you can run a free scan at gold.safeguard.sh/scan to see what a reviewer's component question would surface.
Quick check
Is a longer questionnaire a sign of a longer review?
Not necessarily. Review length tracks round trips and the buyer's queue more than question count. A long form answered completely, with evidence, can close faster than a short form answered vaguely.
Can I run the security review and the contract in parallel?
Often yes, and it usually helps. Ask the buyer whether security terms can be reviewed while the questionnaire is open. Some buyers prefer sequence, so ask rather than assume.
Last reviewed: 19 October 2026.
